* in a few ways:
 *
 * <ul>
 *   <li>Each task may be associated with a different executor.
 *   <li>Tasks may be of type {@code AsyncCallable}.
 *   <li>Running tasks <i>cannot</i> be interrupted. (Note that {@code newSequentialExecutor} does
 *       not return {@code Future} objects, so it doesn't support interruption directly, either.
 *       However, utilities that <i>use</i> that executor have the ability to interrupt tasks

しかし、これは`unicorn_exception_handler`で処理されます。

そのため、HTTPステータスコードが`418`で、JSONの内容が以下のような明確なエラーを受け取ることになります:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | "技術詳細"

また、`from starlette.requests import Request`と`from starlette.responses import JSONResponse`を使用することもできます。

Neste caso, ele requer o escopo `me` (poderia requerer mais de um escopo).

/// note | "Nota"

Você não necessariamente precisa adicionar diferentes escopos em diferentes lugares.

Nós estamos fazendo isso aqui para demonstrar como o **FastAPI** lida com escopos declarados em diferentes níveis.

///

   * during {@code Executor.execute} (e.g., a {@code RejectedExecutionException} or an exception
   * thrown by {@linkplain MoreExecutors#directExecutor direct execution}) will be caught and
   * logged.
   *
   * <p>Note: If your listener is lightweight -- and will not cause stack overflow by completing
   * more futures or adding more {@code directExecutor()} listeners inline -- consider {@link

   * during {@code Executor.execute} (e.g., a {@code RejectedExecutionException} or an exception
   * thrown by {@linkplain MoreExecutors#directExecutor direct execution}) will be caught and
   * logged.
   *
   * <p>Note: If your listener is lightweight -- and will not cause stack overflow by completing
   * more futures or adding more {@code directExecutor()} listeners inline -- consider {@link

        }

        /*
         * if there is an andx and it itself is an andx then just recur by
         * calling this method for it. otherwise just read it's parameter words
         * and bytes as usual. Note how we can't just call andx.readWireFormat
         * because there's no header.
         */

        if( errorCode != 0 || andxCommand == (byte)0xFF ) {
            andxCommand = (byte)0xFF;
            andx = null;

{!> ../../docs_src/body/tutorial004.py!}
```

////

函数参数按如下规则进行识别：

- **路径**中声明了相同参数的参数，是路径参数
- 类型是（`int`、`float`、`str`、`bool` 等）**单类型**的参数，是**查询**参数
- 类型是 **Pydantic 模型**的参数，是**请求体**

/// note | "笔记"

因为默认值是 `None`， FastAPI 会把 `q` 当作可选参数。

FastAPI 不使用 `Optional[str]` 中的 `Optional`， 但 `Optional` 可以让编辑器提供更好的支持，并检测错误。

///

## 不使用 Pydantic

## 더 많은 정보

<abbr title="교차-출처 리소스 공유">CORS</abbr>에 대한 더 많은 정보를 알고싶다면, <a href="https://developer.mozilla.org/ko/docs/Web/HTTP/CORS" class="external-link" target="_blank">Mozilla CORS 문서</a>를 참고하기 바랍니다.

/// note | "기술적 세부 사항"

`from starlette.middleware.cors import CORSMiddleware` 역시 사용할 수 있습니다.

**FastAPI**는 개발자인 당신의 편의를 위해 `fastapi.middleware` 에서 몇가지의 미들웨어를 제공합니다. 하지만 대부분의 미들웨어가 Stralette으로부터 직접 제공됩니다.

* Se o parâmetro é declarado como um **modelo Pydantic**, será interpretado como o **corpo** da requisição.

/// note | "Observação"

O FastAPI saberá que o valor de `q` não é obrigatório por causa do valor padrão `= None`.

It will be defined in OpenAPI with `anyOf`.

To do that, use the standard Python type hint <a href="https://docs.python.org/3/library/typing.html#typing.Union" class="external-link" target="_blank">`typing.Union`</a>:

/// note